MMD
HIGH MANGANESE LUMPY SILICEOUS ORE
HIGH GRADE ORE
Manganese – symbol Mn – is the fourth most used metal in the world (after iron, aluminium and copper). Manganese is
never used in its own right (as a pure metal), but it’s an important raw material for many applications.
The final market for over 90% of all Mn ore produced is steelmaking. Ore is transformed into ferroalloys (silicomanganese or ferro-manganese) or manganese metal. These are essential raw materials for carbon and stainless steel
as alloying elements, desulphurizing agents and deoxidizers in the metallurgical process.
The remaining 10% is used to produce a range of Mn compounds, indispensable in the chemical industry for the production
of batteries, fertilizers, pigments and different reagents.
Comilog's “Compagnie Minière de l’Ogooué” produces high grade oxidized ore at its Moanda mine in Gabon. The
saleable products come in different grades and sizes and some ore fines are processed locally into Sinter.
MMD
HIGH MANGANESE LUMPY SILICEOUS ORE
CHEMICAL COMPOSITION
PACKING
Comilog products specifications – Metallurgical grades
MMD is only delivered in bulk.
Typical
Mn
44.50 %
SiO2
8.00 %
AI2O3
7.60 %
Fe
5.00 %
P
0.11 %
K 2O
0.90 %
Guaranteed
43.00 %
MMD grade with its high Silicon content has been specifically
designed for production of SilicoManganese (SiMn) and Low
Carbon SilicoManganese (LCSiMn).
0.13 %
SIZING
90 % typical between 5 – 75 mm at Owendo port.
February 2014/ Credit: Eramet – Creation: V. Mellot - Graphic design: J.M. Salameh -
CHARACTERISTICS
Web: http//www.eramet.fr – Contact: [email protected]
It presents a very high reactivity allowing a substantial reduction
in energy consumption and high productivity in the furnace.
Its low Iron content makes it a good mix with ferrous rich ores.
In the furnace the sizing of the Ore gives a good balance between
the high reactivity of fine material and the permeability given by
Lumpy Ore.
Comilog ore has naturally a very low Boron content of around 10
ppm which enables production of low boron Mn-alloys needed for
applications such as line pipe or shipbuilding to limit
embrittlement issues and to improve welding process.